Devices and methods for placing a gastrointestinal device

A method of retaining an inner catheter for delivery of a gastrointestinal device, the method comprising:

• surrounding a portion of an inner catheter that is movably disposed within a handle with an elongated element within the handle;
• depressing a button on a side of the handle, to engage the inner catheter via the elongated element;
• and
• retaining the inner catheter within the handle based on the resulting engagement of the inner catheter.

A delivery system for placing a gastrointestinal device in a mammalian gastrointestinal tract, the system comprising:

• a container assembly;
• a gastrointestinal implant device that includes a proximal end and a distal end stored within the container assembly, the proximal end including an anchor and the distal end including a floppy sleeve, coupled to the anchor and folded into the container assembly;
• and
• an inner extension to draw a portion of the sleeve from the anchor and from the container assembly as the anchor is retained therein;
• the inner extension comprising an atraumatic tip that comprises a guidewire rail.